Herc/Mara
The short version is Darth Vader isn't the only Sith in the Skywalker family line.
Jacen Solo showed up last week. SWORD gave him an evaluation, requested Skywalker's evaluation and the end result seems to be they have decided he is safe for the tower.
It's not exactly a large secret with Google being so easy to use but he kills me in my future, his past. For Luke's sake and honestly for my own, I'm choosing to believe SWORD is not wrong and that there is a chance he can do the good things the 11 year old boy I know has the potential for doing. But I'm me, so I'm preparing for the possibility SWORD might be wrong. The family all knows of course, and I've spoken to Sam. But you're the other person, that if I needed someone that I'd call.
And I know I'm not objective not can I count on Luke to be entirely so. I need people who can ask me questions and demand me to look at things I might not see.